string

Cron expression for specifying period of execution.

Examples:

• 0/2 * * * * ? * - Every 2 seconds

• 0 45 9 ? * * - Every day at 9:45

• 0 15 8 ? * MON-FRI - Every workday at 8:15

boolean

Allow concurrent execution if previous task didn’t finish before next execution. Default value is true.

string

Identification of the started task. This can be used to later look up the instance, for example to cancel it.